EP 1775582 A1 20070418 - Paramagnetic gas analyzer with detector mounting
Title (en)
Paramagnetic gas analyzer with detector mounting
Title (de)
Paramagnetischer Gas-Analysator mit Sensorbefestigung
Title (fr)
Analyseur de gaz paramagnétique avec montage de detecteur
Publication
Application
Priority
EP 05109558 A 20051014
Abstract (en)
The invention relates to paramagnetic gas analyzer with a housing (70), comprising: an electromagnet (5) with an air gap (16); power source (60) for said electromagnet; a sample gas conduit (1) and a reference gas conduit (2) into said air gap; an exit conduit (18, 19) communicating with said air gap (16) for removing the intermixed gases; pressure detecting microphones (3, 4) connected to said sample gas conduit and to said reference gas conduit for sensing the gas pressures; as well as electronics (29). The pressure detecting microphones comprise two independent microphonic membranes (6, 7) that are parallel to each other, their pressure surfaces (6a, 7a) being to the same direction (T), or to the opposite directions (T, -T). The electrical outputs (3 E , 4 E ) of the microphones provide signals (S1, S2) that are proportional to gas pressures in the sample gas and reference gas conduits, and that are further processed in the electronics to eliminate effects of mechanical shocks or the like.
IPC 8 full level
G01N 27/76 (2006.01)
CPC (source: EP US)
G01N 27/74 (2013.01 - EP US)
Citation (search report)
- [DY] US 4808921 A 19890228 - CHRISTENSEN JORGEN [DK]
- [Y] US 5596147 A 19970121 - WILDA DOUGLAS W [US], et al
- [A] US 5251264 A 19931005 - TICHY THOMAS H [US]
- [A] US 4772848 A 19880920 - HUMMEL HEINZ [DE]
Designated contracting state (EPC)
DE GB SE
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1775582 A1 20070418; US 2007084265 A1 20070419; US 7726176 B2 20100601
DOCDB simple family (application)
EP 05109558 A 20051014; US 54888506 A 20061012